Aftermath Protocol has confirmed an exploit affecting its perpetuals protocol, resulting in losses of approximately $1.14 million. This incident is part of a broader trend of security breaches in April, which have collectively led to over $600 million in losses across the decentralized finance (DeFi) sector. The exploit was due to a flaw allowing negative builder fees, prompting the protocol to pause operations as a precaution. April has seen significant DeFi security incidents, with major exploits like Kelp DAO's rsETH-related vulnerability and Drift Protocol's collateral manipulation attack accounting for the bulk of losses. These incidents, alongside mid-sized and smaller exploits, underscore the fragmented risk landscape in DeFi, highlighting vulnerabilities in smart contract logic, key management, and infrastructure security.